V/STOL (Vertical/Short Takeoff and Landing) Low Speed and Transition Equivalent Systems Analysis
V/STOL (Vertical/Short Takeoff and Landing) Low Speed and Transition Equivalent Systems Analysis

Author: Carl G. Carpenter

Publisher:

Published: 1982

Total Pages: 193

ISBN-13:

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A fixed base manned V/STOL handling qualities simulation was performed to investigate 1) classification criteria of attitude and rate command systems in hover and low-speed flight; 2) control system blending schemes for transition from approach dynamics to hover dynamics and vice versa, and 3) the amount of control usage. Pilot ratings and comments showed that a time response criterion discriminated well between attitude and rate systems; blending schemes for transition correlated well with earlier NASA results and; pilot's command gain had a strong effect on piloting characteristics and the amount of control usage. (Author).

An Analytical Study of V/STOL Handling Qualities in Hover and Transition
An Analytical Study of V/STOL Handling Qualities in Hover and Transition

Author: R. L. Stapleford

Publisher:

Published: 1965

Total Pages: 174

ISBN-13:

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The hover analysis considers pilot attitude and position control tasks in the presence of horizontal gusts. The effects of each of the stability derivatives on the difficulty of the control tasks and on the closed-loop gust responses are determined. It is clearly shown that the handling qualities studies of control sensitivity and angular damping must consider the influences of M sub u (or L sub v) and should include gust inputs. These conclusions are substantiated by previous variable-stability-helicopter experiments. The effects of vehicle size and geometry are investigated by several approaches. The key result of increasing size is found to be a reduction in M sub u and L sub v which can, in turn, lower the requirements for control power and damping. The handling qualities during transition of two vehicles, a tilt duct and a tilt wing, which were previously tested on a simulator are analyzed. It is shown that both trim control and perturbations about the trim conditions must be considered. In fact, part of the increased difficulty in landing transitions, in comparison with takeoff transitions, is due to more difficult trim control; the much more stringent position control requirements in landing are also a contributing factor.

Aerodynamics of V/STOL Flight
Aerodynamics of V/STOL Flight

Author: Barnes Warnock McCormick

Publisher: Courier Corporation

Published: 1999-01-01

Total Pages: 356

ISBN-13: 9780486404608

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An extremely practical overview of V/STOL (vertical/short takeoff and landing) aerodynamics, this volume offers a presentation of general theoretical and applied aerodynamic principles, covering propeller and helicopter rotor theory for both the static and forward flight cases. Both a text for students and a reference for professionals, the book can be used for advanced undergraduate or graduate courses. Numerous detailed figures, plus exercises. 1967 edition. Preface. Appendix. Index.

Integrated Control and Display Research for Transition and Vertical Flight on the NASA V/Stol Research Aircraft (Vsra)
Integrated Control and Display Research for Transition and Vertical Flight on the NASA V/Stol Research Aircraft (Vsra)

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-08-16

Total Pages: 34

ISBN-13: 9781725638440

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Results of a substantial body of ground-based simulation experiments indicate that a high degree of precision of operation for recovery aboard small ships in heavy seas and low visibility with acceptable levels of effort by the pilot can be achieved by integrating the aircraft flight and propulsion controls. The availability of digital fly-by-wire controls makes it feasible to implement an integrated control design to achieve and demonstrate in flight the operational benefits promised by the simulation experience. It remains to validate these systems concepts in flight to establish their value for advanced short takeoff vertical landing (STOVL) aircraft designs. This paper summarizes analytical studies and simulation experiments which provide a basis for the flight research program that will develop and validate critical technologies for advanced STOVL aircraft through the development and evaluation of advanced, integrated control and display concepts, and lays out the plan for the flight program that will be conducted on NASA's V/STOL Research Aircraft (VSRA). Foster, John D. and Moralez, Ernesto, III and Franklin, James A. and Schroeder, Jeffery A. Ames Research Center NASA-TM-100029, A-87350, NAS 1.15:100029 RTOP 533-02-41...

VTOL and STOL Simulation Study
VTOL and STOL Simulation Study

Author: Robert C. Conway

Publisher:

Published: 1968

Total Pages: 54

ISBN-13:

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A simulation study to determine the effect on air traffic control when both Vertical and Short Takeoff and Landing aircraft are introduced into a terminal air traffic control environment was conducted. The simulation was conducted using the Model B Dynamic Air Traffic Control Simulator. Several approach conditions, various glide slope angles, and separation criteria were investigated to determine the effect on a terminal environment. It was concluded that Vertical and Short Takeoff and Landing aircraft could be accommodated in the terminal area using present operational procedures as contained in the Terminal Air Traffic Control Manual 7110.8. However, when Vertical and Short Takeoff and Landing aircraft reduced from terminal area speed to a slow final approach speed, difficulties were encountered in providing not only the desired spacing between these aircraft but between these aircraft and conventional aircraft in the sequence to and on the final approach course. These problems did not exist when Vertical and Short Takeoff and Landing aircraft used a final approach speed compatible with that of conventional aircraft. (Author).

Aeronautical Engineering
Aeronautical Engineering

Author:

Publisher:

Published: 1991

Total Pages: 568

ISBN-13:

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A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).